This is the Buttonhole Sole Only. To fit the Bernina Snap on shanks so you can easily change feet during sewing. Please check your model is listed prior to ordering. Will Fit Mechanical Bernina Models: 910, 930, 931, 932, 933, 940, 950, 1000, 1001, 1004, 1005, 1006, 1008, 1010, 1011,1015, 1020, 1021, 1030, 1031, 1050, 1070, 1080, 1090, 1091, 1120, 1130, 1230, 1240, 1241, 1260, 1530, 1630 Will Fit Computerised Bernina Models: 125, 125 S, 135, 135 S, 145, 145 S, 210, B 215, 220, 230, 230 PE, 240, B 325, B 330, B 335, B 350 PE, B 380, 2 130, 140, 150, 153, 153 QE, 155, 160, 163, 165, 170, B 530, B 550 QE, 430, 440 QE, B 555, B 570 Q